Intelligent vertical spiral bagging device and control method

Abstract

An intelligent vertical spiral bagging device, which includes a storage hopper, the lower end of the storage hopper is connected to an air extraction barrel, the lower end of the air extraction barrel is connected to an inner material barrel, a feeding screw is arranged inside the inner material barrel, and there is a The lifting outer cylinder is equipped with a laser rangefinder on the outer upper end of the lifting outer cylinder. The lifting outer cylinder passes through the middle of the weighing mechanism, and the weighing mechanism is fixed on the lifting frame. The lifting frame is driven by the lifting motor, and the lifting motor is equipped with Rotary encoder and frequency converter, the suction barrel is connected to the outlet of the electric proportional valve, the electric proportional valve can automatically adjust the negative pressure value at the outlet end according to the input electric signal, the inlet of the electric proportional valve is connected to the negative pressure suction system, called The sensor signal of the weight mechanism is transmitted to the weighing instrument, and the weighing instrument transmits the weight signal to the PLC control system, and the PLC control system is responsible for coordinating and controlling the various actions of the entire device. The invention can achieve good air extraction effect and weighing accuracy under the condition that the gas content of the material is constantly changing, and realizes intelligent packaging.

Description

technical field [0001] The invention discloses an intelligent vertical spiral bagging device and a control method, belonging to the field of powder packaging machinery. Background technique [0002] Patent document CN104960679A discloses a fully automatic vertical screw feeding packaging machine, which can automatically realize the entire process of powder feeding, weighing, and bagging. Patent document CN206826953U discloses a vertical screw feeding device that extracts air in advance, uses negative pressure air extraction system to extract air mixed in fine powder, improves the bulk density of powder, thereby expanding the range of fully automatic vertical screw feeding The scope of application of the packaging machine. The packaging machine that comprehensively adopts the above two patented technologies has been widely used, but there are still some problems in practical application: due to the limitation of production process conditions, the air content of the same fine...

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Problems solved by technology

[0003] In order to solve the problems that the existing vertical screw feeding packaging machine cannot automatically adapt to the change of the gas content of the material and the change of the filling rate of the screw, causing the material to overflow the packaging bag, the weighing error is large, and the material level in the bag is too high, the present invention proposes An intelligent vertical spiral bagging device, which includes a storage hopper 1, the lower end of the storage hopper 1 is connected to an air extraction barrel 2, the lower end of the air extraction barrel 2 is connected to an inner barrel, and a feeding screw 8 is arranged inside the inner barrel to feed The material screw 8 is driven by a motor, and the lower part of the suction barrel 2 is also provided with a lifting outer cylinder 5, and a laser rangefinder 10 is arranged on the outer upper end of the lifting outer cylinder 5, and the lower end of the laser rangefinder 10 is connected to a beam tube 13, and the beam tube The lower end exit of 13 is near the exit of the feeding screw 8, the beam of the laser range finder 10 is irradiated downward in the beam tube 13, the lifting outer cylinder 5 passes through the middle part of the weighing mechanism 12, and the weighing mechanism 12 is fixed on the lifting frame 11 Above, the lifting frame 11 is driven by the lifting motor 9 to realize up and down lifting. The lifting motor 9 is provided with a rotary encoder and a frequency converter. The negative pressure value at the outlet end can be automatically adjusted according to the input electrical signal, the inlet of the electric proportional valve 3 is connected with the negative pressure exhaust system 4, the load cell signal of the weighing mechanism 12 is transmitted to the weighing instrument 6, and the weighing instrument 6. Transmit the weighing signal to the PLC control system 7, and the PLC control system 7 is responsible for coordinating and controlling the various actions of the entire intelligent vertical spiral bagging device

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